Profile: McAllister Technical Services is a manufacturer of surface analytical instruments and devices. Our products include precision XYZ manipulators, bore XYZ manipulators, precision XY translators, mass spec translators, gimbal tilt manipulators, kelvin probes, electron energy loss spectrometers, infrared bake out heaters, electron beam evaporators, thermal evaporators and multi-port adapters. Our MC1500 and MC2000 series of XY translators combine extremely high rigidity & a large working bore. They are available in both ± 1.0 (± 25 mm) and ± 0.5" (± 12.5 mm) travel, circular pattern, with both manual and stepper motorized versions. In fact, conversion from micrometers to stepper motors can be done in 15 minutes at the user's site. Both the MC1500 and the MC2000 have features not found on translators available elsewhere, such as tilt adjustment on the top flange. Our digital kelvin probe system is a vibrating capacitor technique used to measure the change in work function of metals, semiconductors and liquids. The kelvin method has extremely high surface sensitivity and is completely non-damaging, even to the most sensitive adsorbates.